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    • 1. 发明授权
    • Deterministic cleave of optical fiber
    • 光纤的确定性切割
    • US08740029B2
    • 2014-06-03
    • US13171435
    • 2011-06-28
    • Michael K. BarnoskiSuresh T. GulatiKing-Fu HiiDonald KeckWilliam R. PowellR. Ryan Vallance
    • Michael K. BarnoskiSuresh T. GulatiKing-Fu HiiDonald KeckWilliam R. PowellR. Ryan Vallance
    • B26F3/00
    • G02B6/25Y10T225/12Y10T225/321Y10T225/325
    • Axial tension is applied to an optical fiber that had been scored at the intended cleave location, wherein the axial tension is applied in a time-varying manner to maintain the stress intensity factor for crack on the fiber within an acceptable level to produce a stable crack growth at a reasonable rate to cleave the fiber without requiring polishing of the end surface. Careful control of the applied tension force with time acts to control the velocity of the propagating crack by maintaining substantially constant stress intensity factor. The applied axial tension force is reduced with time and/or crack growth (as crack propagates). As a result, the strain energy in the fiber material is released by formation of a single plane with an optical quality surface without requiring polishing. A substantially flat optical surface of enhanced optical quality is formed at the cleaved end of the optical fiber.
    • 将轴向张力施加到在预定的切割位置刻痕的光纤,其中以时变方式施加轴向张力,以将纤维上的裂纹的应力强度因子保持在可接受的水平内以产生稳定的裂纹 以合理的速率生长以切割纤维而不需要抛光端面。 随着时间的推移,仔细控制施加的拉力可以通过保持基本上恒定的应力强度因子来控制传播裂纹的速度。 所施加的轴向拉力随着时间和/或裂纹扩展而减小(如裂纹扩展)。 结果,通过形成具有光学质量表面的单个平面而不需要抛光来释放纤维材料中的应变能。 在光纤的切割端形成基本平坦的光学质量的光学表面。